Living cationic polymerization and polyhomologation: an ideal combination to synthesize functionalized polyethylene–polyisobutylene block copolymers
Type
ArticleKAUST Department
Physical Sciences and Engineering (PSE) DivisionKAUST Catalysis Center (KCC)
Polymer Synthesis Laboratory
Date
2015-12-17Permanent link to this record
http://hdl.handle.net/10754/592609
Metadata
Show full item recordAbstract
A series of hydroxyl-terminated polyisobutylene-b-polyethylene (PIB-b-PE-OH) copolymers were synthesized by combining living cationic polymerization and polyhomologation. Allyl-terminated PIBs, synthesized by living cationic polymerization, were hydroborated with BH3·THF to produce 3-arm boron-linked stars, PIB3B, which served as macroinitiators for the in situ polyhomologation of dimethylsulfoxonium methylide. The resulting 3-arm star block copolymers, (PIB-b-PE)3B, were oxidized/hydrolysed to afford PIB-b-PE-OH. Characterization of all intermediates and final products by high temperature gel permeation chromatography (HT-GPC) and proton nuclear magnetic resonance spectroscopy (1H NMR) revealed the well-defined character of the copolymers. The thermal properties of the copolymers were studied by differential scanning calorimetry (DSC).Citation
Living cationic polymerization and polyhomologation: an ideal combination to synthesize functionalized polyethylene–polyisobutylene block copolymers 2016 Polym. Chem.Publisher
Royal Society of Chemistry (RSC)Journal
Polym. Chem.ISSN
1759-99541759-9962
Additional Links
http://xlink.rsc.org/?DOI=C5PY01892Gae974a485f413a2113503eed53cd6c53
10.1039/C5PY01892G